The power consumption of the DACx3004 in sleep mode and deep-sleep mode are provided in Section 6.20. In normal operation, the total power consumption of the device depends on the number of channels powered on and the output mode of each channel (voltage or current). In current-output mode, the I_DD also depends on the output range. The I_DD calculation excludes the load current. For example, in the ±250 μA output mode with a DAC setting of +125 μA, the total current drawn through the VDD pin is the total I_DD plus 125 μA. The total I_DD in normal operation can be calculated using Equation 1.

where:

• I_{DD_SLEEP} is the current through V_DD in sleep mode when all the channels and internal reference are powered down.
• I_{DD_REF} is the reference current, which is:
  • either the current drawn by the reference input impedance when V_DD is used as reference
  • or the current drawn by the internal reference, if enabled
• I_{DD_X} is the current through V_DD for every powered-on channel-X.